Plow



I March 15, 1927.

1,626,969 1.. c. HESTER V i 1 "PLOW Filed June 24, 1926 Z/M as?ATTORNEYS March 15 1927 L. C. HESTER PLOW Filed June 24, 1926 2Sheets-Sheet 2 INVENTOR L. C. M's-fie]:

ATTORNEYS plow, thereby insuring uniform manipulate.

Patented Mar. 15,1927.

UNiTEo STATES I LEVI C. HESTER, OF JACKSONVILLE, FLORIDA.

' rhow.

This invention relates in general to an improvement in plows andmoreparticularly relates to an improvement in lifts especially designed,and: adapted for use with plows employed on tractors.

Theobject of the present invention is to provide a lift mechanisminterfere with the cutting action of the plow when it is desired to havethe plow cut to its maximum depth but ily adjusted to vary the depth ofout of the plow or to lift the plow up above the ground.

A further object is to provide mechanism wherein the full weight of theplows and associated structure operates to maintain the plows in theground during the lifting operation and yet this weight of the plowsiscounterbalanced when the lift is brought into action to elevate theplows.

A further object-is to provide a lift which is independent of therunning gear of the irrespective'of how the running gear may be vibratedor inoved up and down and yet along with this advantagethe lift is ofsuch a character as tobe quick-actingand easy to further object residesin the provisionv of a plow wherein the plow assembly is free to moveup; over rocks or other obstructions that plows are not designed andadapted to cut-through 4 Y Accordingly the present invention resides inthe provision or a lifting mechanism on A still therbody or housing of atractor which conj trols a disc plow assembly mounted on a swingablepush or the like. Preferably betweenthe lifting mechanism and the plowshas one end connected to hasits other end connected to a sector pivotedto the brackets secured to the housing of the tractor and controlled bya lever and operating bar. Means is provided for'lock ing the operatingbar in any adjustment, and in conjunction with the lever means isprovided for counterbalancing the weight of the plows. Thiscounter-balancing means is onlyeii'ective when the operating bar isreleased from its locking mechanism and this has the advantage ofleaving the full weight of the plows operative to maintain the plows inthe ground during the plowing operation.

As the lift is mounted. entirely on the which does not 1 which mayberead-:

a lifting depth of cut the essentialfeatures v 'nism are the same, Inthe dltferent vlews V bar, by means of a flexible thoughpositiveconnection such as a chain the chain employed the push bars and plowbeams are not transmit-tedto theplows and conse -Q quentlyfthe furrow isevenand uniform. Other ob ects and advantages reside in i I 1520,9691PATENT emc housing and "tractor above the running-gear thereof, thevibrationsof the running gear certain novel features of theconstruction, ar-

rangement and combination of parts which will be hereinafter more fullydescribed and particularly pointed out in the appended claims referencebeing had to the 'accompanyingfdrawin'gs forming a part 'of thisspecification, and in which:

Figure l is a View in side elevation show-' ing a lift embodyingthepresent invention "mounted on one type of tractor,

Figure 2 is a similar view showing the invention inounted on anothertype of tractor, 7 V

Figure 3 is a perspective view showing a V lifting mechanism employedwith the tractor shown in Figure 1, I i

F lgure 4 IS a fragmentary perspective view showing how the lift ismounted on the tractor shown in Flg. 2, and

' Figure 5 is a detail perspective viewshowing themounting of thestandard which carlies the guide for the rocking bar in the applicati'onof the invention shown in Fig.2. Referring to the drawings it will beseen, that in both apphcations ofthe invention.

details of the two, applications of the invention..will be pointedout-In Figs. 1 and 3 one type of tractor is shown and is designated In .bothapplications of the invention a push bar 3 is provided and has its rearend pivotally and positively connected to a suit ablepart of thetractor,

ofthe lifting mecha- I at 1-. Thetypeof tractor shownin Fig. 2 issomewhat different, as indicated at 2.

. On the push bars 3 4 are provided and carry disc H plows 5.. Thelifting mechanism which con} stitutes the present lnvention includes asec tor 6 pivotally mounted on thebody ofthe tractor or on thetract'orhousing" by suitable brackets and connected to one end of achain 7, the chain :7 being also connected to the for- I ward end. ofthepush bar 3, as indicated at 8.

A lever arm 9 is fixed, as at 10, to the sector andis also pivotallyeonnectech'as at an operating bar 12. The operating bar 12 has a handleportion 13 and is slidable through a U-shaped guide 14 carried onanangle bar standard15- -The lower edge of p the bar 12 has a series ofnotches 16 designed to selectively engage the lowerfportion of the guide16. A spring 17 'urges'the bar 12 pdown against the lower portion of theguide 14 to insure interlocking engagementbetxveen v the notches 16 andthe guide. When any onejof the notches 16 engages the lower portion ofthefguide'14 the lever arm 9 and consequently the sector 6 is "lockedin'po'si- J tion andis firmly and positively held against movement ineither direction. The operatingbar-IQ may berea'dily' released byswingingthe same upwardly against the tension of thejsp'ring 17 afterwhich it may be moved either 'ba'ckward or forward.

YFor thepur-pose of counterbalancing the weight oftheplows' durin'gthelifting operationand yet le'avingthe full weight of thejplows effective"tojmaintain the plows infthe ground a retractile coil "spring '20 is 7provided and "has one end'connected, as at- 21, tothe lever arm 9 andhas its other end connected,ias a522, to the standard 15. The

periphery oi'fth'e sector: 6 is grooved to receive the chain, asclearlyshown at and the advantage of using this sector 'ist'hat itprovides a -quick-acting lift which has a relatively great throw oroperative move- .mentin allphasesof the'littin'g operation.

The chain 7 provides a flexible yet positive connection which may beusedto regulate the (:l'epth of -out and yet permit upwardv movement oi theplow assembly should a boulder or other obstructionto'o heavy or,

hard for .the plows to out be encountered. While "the spring 20 does notact "during the plowing operationas soonjas the lift is brought intooperation this spring 20 at once becomes operative .to counterbalancethe weight of theJplows and facilitate the lift-- ing operation.

As clearly shown in Fig. '3jt'he sector 6 in Ithe emhodiment of theinvention shown .in i1 and dis 7 bracket-'25 bolted, as at 26,1toflanges 27 flanges cutaway, .as at 15 7 engage a portion of the tractorhousing and 50 pivotally mounted on a which are ordinarily providedonithe tractor housing. The standard 15 has one offits to adapt it to...bars and 36, the angle barsf35 and '36 being maintained in, spacedparallel relation 'or'rivete'dto a bracket, designated at 40, thebracket 40 including bar pivoted to said lever arm, 'on'the tractor andthrough which the operating bar slides, said operating 'bar'and said 7guide having interengaging: parts for holdingt'hebarin.adjustedposition,a'chain'beby means of a plate 37 riveted, as at 38 and 39., to theanglebars 35 and 36, respectively. The angle bar 35 has one of itsflanges bolted generally a member 41 having a grip 42' embracing thehousing 4801 the tractor. The member 41 also has an outwardly extendingportion 44 terminating in *a vertical attaching portion 45. The bracket40 is completed by .a brace memher 46 having a curved portion '47secured V by a bolt and nut48 to thehousing43and also having anoutwardly extending portion 49 terminating in an attaching portio "50riveted to the bar 5.v The angle bars 35;"and

36 not only provide a. monnting for-the'secceivethe forward end ofthe'pnsh bar?) and constrain the plow assembly Ito vertical.

swinging movement. The angle bar 15in; the form of the invention shown1n Figs.

2, 4 and 5 may be conveniently ,securedfby rivets or bolts and nutsadvantage-in Fig. 5.

I clai1n-:- 1. A plow ioruse on tractors comprising to the bracket 56 V01? themud guard orfender, as shownto push bar having its rearward endcon- I nected to thebody of the tractor, a pl'ow on the said push'bar, a

assembly mounted to the body of thetraclift support secured tor, asector for rocking said sector, anda chain between the sector and thepush bar.

'2. A'plow for useon tractors and in --accordance with claim 1 andwherein "the means tor rocking the sector comprises a lever armconnected to the sector,"an'operatin'g barpivoted torsaid lever arm, aguide fixed on the tractor through which t'he"'0pcrating "bar slides,said operating-bar and pivoted to said support, means said guide havinginterengagin'g parts for f holding the part in adjusted 3. A plow-for apush bar having its rearward "end connected to the body of the tractor,aplow positioni assembly mounted on said push'bar, a lift supportsecured to the body of the. tractor.

a sector pivoted to said support, a leveran operating arm pivoted tosaid sector,

a guide *fixed tween thesector and the push bar, and a spring connectedto the tractor and-lever arm to 'counterbalancethe Weight of the plowsduring the lifting operation. v

i Q evi e.

use on tractors com-prising

